... type,Combined type... FinishZinc plated,Nickel plated,Dacroment Plated,chromium plated,Tin plated,Black phosphating ,anodized ,Parkerising,and ... Environmental Plated is used in our products,Hexavalent chromium are accord with ROHS Standard. Weight Packing for each carton will ... Experience ,good technology1.We are a professional manufacturer with more than 20 years experiences in screw,bolt,nut ...